Boeing's mistake was to use the stabiliser to actuate MCAS. If they had followed the example of the BAC 1-11 and the deep stall problem in the 1960's they would have had a stick shaker followed by a stick pusher on the elevators. At least the pilot was in the loop throughout the period of designed operation, even if as I suspect like MCAS the pusher was there to satisfy the certification regime and unlike the 737 probably never actuated in flight.
The only issue then would be the small size of the elevators on the 737 but that could have been resolved.
Last edited by sky9; 4th Apr 2019 at 08:38.